Driving or transmission mechanism for type and other machines.



J. S. BANGROFT & M. G. INDAHL. DRIVING 0R TRANSMISSION MECHANISM FORTYPE AND OTHER MACHINES.

APPLIOATIONTILED JANH 1909. 962,408. Patented June 28, 1910.

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J S. BANGROPT & M. G. INDAHL.

DRIVING OR TRANSMISSION MEOHANINM FOR TYPE AND OTHER MACHINES.

APPLICATION FILED JANA, 1909.

Patented June 28, 1910.

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962,408. Patented June 28,1910.

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J. S. BANGROFT & M. G. INDAHL.

DRIVING 0R TRANSMISSION MECHANISM FOR TYPE AND OTHER MACHINES. I

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Patented June 28, 1910.

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J. S. BANGROFT & M; G. INDAHL.

DRIVING OR TRANSMISSION MECHANISM FOR TYPE AND OTHER MACHINES.

APPLIGATION FILED JANA. 1909.

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Patented June 28, 1910.

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J. S. BANGROFT & M. U. INDAHL. DRIVING OR TRANSMISSION MECHANISM FORTYPE AND OTHER MACHINES.

APPLICATION FILED JANA, 1909.

Patented. June 28, 1910.

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Patented June 28,1910.

J. S. BANGROPT & M. G. INDAHL. DRIVING 011 TRANSMISSION MECHANISM FORTYPE AND OTHER MACHINES.

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J. S. BANOROFT & M. G. INDAHL. DRIVING OR TRAN$MISSION MECHANISM FORTYPE AND OTHE R MACHINES.

Patented June 28 APPLICATION FILED JANA. 1909.

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J. S, BANGROFT & M. G. INDAHL.

DRIVING 0R TRANSMISSION MECHANISM FOR TYPE AND OTHER MACHINES.

APPLIGATIOH FILED JANA, 1909. r

Pabented 611116 28, 1916.

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j W w UNITED STATES PATENT OFFICE.

JOI-IN SELLERS BANCROF'I AND IMAURITZ C. INDAIIL, OF PHILADELPHIA,PENNSYL- VANIA, ASSIGNORS 'IO LANSTON IYIONOTYPE MACHINE COMPANY, OFPHILADEL- :PI-IIA, PENNSYLVANIA, A COEPCR-AI'ION OF VIRGINIA.

DRIVING- OB TRANSMISSION MECHANISM FOR TYPE AND OTHER MACHINES.

To all whom it may concern:

Be it known that we, JOHN SELLERS BAN- onorr and MAURITZ C. INDAHL, bothresiding at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented a certain new and useful Improvement inDriving or Transmission Mechanism for Type and other Machines; and we dohereby declare the following to be a full, clear, and exact descriptionof the same, reference being had to the accompanying drawings, forming apart of this specification, and to the figures of reference markedthereon.

This invention relates to the driving mechanism of type and similarcasting machines wherein it is desired to produce a dwell in the motionof the mechanism sufficient to permit the setting of the metal beforeits discharge from the mold and it has for its principal object toprovide a means whereby said dwell can be varied in extent or durationto suit existing conditions.

To this end the invention consists broadly in automatically controllingthe timing mechanism through the mold adjusting de vices, to vary theduration or extent of the dwell proportionally to the size of the moldcavity.

In adition, the invention includes minor features relating to theconstruction, combi nation and arrangement of parts hereinafterdescribed and pointed out in the appended claims.

In the accompanying drawings illustrating a preferred form of embodimentof said invention: Figure 1 is a view in perspective of a portion of atype casting machine of known construction with the improved drivingmechanism applied thereto. Fig. 2 is a front elevation and Fig. 3 a topplan view of the driving mechanism complete. Fig. a is a verticalsection on the line aa, Fig. 2. Fig. 5 is a vertical sectional view ofthe timing mechanism and primary clutch with some of the intermediatedevices in elevation. Fig. 6 is a sectional view through the primaryclutch and a portion of the braking or cushioning mechanism togetherwith the stop device and controlling devices connected therewith. Fig. 7is a perspective view of the driving member of the primary clutchSpecification of Letters Patent.

Application filed. January 4, 1909.

Patented June 28, 1910.

Serial No. 470,576.

and the clutch opening collar. Fig. 8 is a sectional view of the drivenmember of the primary clutch. Fig. 9 is a perspective view showing thehub and the actuating collar or ring of the primary clutch detached andseparated. Fig. 10 is a sectional view of a portion of the primaryclutch. Fig. 11 is a perspective view of the controlling lever of thetiming mechanism and its connections. Figs. 12 to 15 inclusive aredetails of the secondary clutch. Fig. 16 is a detail view of the timinglever latching device. Figs. 17 and 18 are detail views showing thespring pin carried by the clutch actuating collar in difierent relationswith the shifting lever of the stop for the primary clutch. Fig. 19 is aperspective view and Fig. 20 a side elevation of the epicyclic train ofgears forming partof the timing mechanism together with the admeasuringarm. Fig. 21 is a partial transverse sectional view of the epicyclictrain showing means for shifting the gear head or casing. Fig. 22 is asectional view on the line c c, Fig. 20. Figs. 23 to 25 inclusive aredetail views of the clutch for the timing mechanism. Fig. 26 is asectional view showing means for adjusting the back stop for theadmeasuring arm of the timing mechanism. Fig. 27 is a detail view of theadjustable connection for the braking or cushioning devices. Figs. 28and 29 are sec tional views partly in elevation and in planes at rightangles illustrating details of the hydraulic check.

Like numerals of reference in the several figures indicate the sameparts.

For purposes of illustration the invention is shown in connection withthe type casting and composing machine of Patent No. 625,998, dated May80, 1899, whereof is shown a portion of the frame together with camshafts 370,371, and mold-blade actuating rod 122, it being understood,however, that the invention is not limited in this re spect, but, on thecontrary, is applicable to any machine and in any situation where adwell in the motion of the driving mechanism proportional to thecapacity of the mold is desired.

It will suffice for present purposes to state that in the machine of thepatent 370 is the main driving shaft or member through which the motoris coupled to and actuates the machine; that rod 122 is so connectedwith the mold dimensioning devices that its longitudinal position isvaried to correspond with the set-wise dimensions of the mold at thetime the cast is made; and that means (such as a hand wheel andconnections) are provided whereby the cam shafts and connectedmechanisms may be turned in either direction when the motor devices aredisconnected.

In the present instance the motor driving mechanism is represented by apulley 1 supported to revolve independently as upon shaft 370, andcoupled with the latter through the medium of a clutch, the latterpreferably of the one revolution automatic closing or engaging typeillustrated, wherein the driving pulley 1, hereinafter referred to asthe driving member is provided with an annular bearing surface 2,surrounding the hub 3 of a cylindrical head 1, the latter fixed to theshaft 370, hereinafter referred to as the driven member. Mounted to turnfreely upon hub 3 is a sleeve 5, provided with a radial arm or ofi-setportion. 6, movable between shoulders 7 on head 4 and slotted at 8 forthe reception of rollers 9, the latter being received in the spacebetween bearing surface 2 and cam seats 10 on the hub 3. A spring 11(Figs. 8 and 10) attached at one end to sleeve 5 and at the other tohead 4 operates to turn said sleeve in a direction to carry the rollers9 toward the more prominent portions of their seats 10, causing them tobe gripped between said seats and the exterior surface 2, and when saidsleeve 5 strikes an obstruction, or is otherwise turned back on hub 3,rollers 9 are shifted onto the lower portions of cam seats 10, theclutch is opened and the driving and driven members are free to rotateinclependently.

The disengagement of the driving and driven members at a predeterminedpoint in the revolution of the latter is efiected, in this instance, bythe interposition of a stop 12 in the path of arm 6, said stop operatingto arrest sleeve 5, thereby shifting the clutching rollers opposite thedepressed portions of seats 10, and permitting the driving member torotate without communicating its motion to the driven member. The clutchrepresented is of the well known one revolution type, the stop 12, afterits withdrawal, to effect the closing of the clutch, being returned intothe path of arm 6 to intercept the latter and open the clutch at the endof each revolution of the driven member. The unclutching movement ofsleeve 5 relative to hub 3 might be limited by the engagement of arm 6with the rear shoulder 7 of head 4, in which event stop 12 would sustainthe impact of the driven mechanism in arresting the latter at the timeof unclutching. At slow speeds and with light mechanism this mightpossibly be successfully performed, but where considerable momentum isdeveloped, as in the type machine to which reference has been made, andit is desired to stop the driven mechanism quickly, it would bedangerous to depend upon the clutch shifting stop alone to bring thedriven mechanism promptly to rest, hence it is desirable, if notpositively necessary, that additional braking or cushioning devicesshould be added. Such a-braking mechanism has been devised and isillustrated herein. The un clutching member or stop 12 is pivotallysupported upon one end of a pair of links 13, the opposite end whereofis pivoted to a lever 14 suspended from a pivot 15 in an extension 16 ofthe frame. To the cam shaft 371 (coupled to rotate in unison with and inthe same direction as cam shaft 370) is secured an arm or abutment 17,in position to engage a latch 18, the latter pivotally supported onlinks 13 and coupled with stop 12 by a link 19 in such manner that saidstop and latch will be oscillated in unison upon their pivots, tosimultaneously withdraw or interpose their operating members in thepaths of their respective arms 6 and 17. A spring 20 tends to hold bothstop 12 and latch 18 in operating position and permits them to bewithdrawn therefrom by operating devices connected with stop 12, as willpresently appear.

A lever 21, pivotally supported at its lower end upon a fixed stud 22 onthe frame is coupled at an intermediate point in its length to lever 14,as by a link 23, and the upper or free end of said lever 21 is coupled,through an adjustable link 24, with a lever 25 whose pivot 26 is mountedin bearings on the removable top plate or cover 27 of a receptacle 28into which latter said lever 25 projects.

Conveniently the receptacle 28 is that containing the retarding pistonsfor the diecase controlling mechanism of our application, Serial No.372,981, filed May 10, 1907, portions of which are illustrated in Figs.28 and 29, but inasmuch as this die case controlling mechanism forms nopart of the present invention a description thereof is unnecessary.

Within receptacle 28 is formed or secured a cylinder 29 closed at oneend and provided with a discharge orifice 30, controlled by a loadedescape valve 31, the latter guided upon an adjustable support 32containing an adjustable seating spring 33 engaging a spherical bearing34* on the valve. A piston 34: working within cylinder 29 and provided"with longitudinal ports 35 is connected to a piston rod 36, the latterprovided with a valve 37 and a pin 38 passing through the piston andcarrying a nut or collar 39. The interval between nut 39 and valve 37 isslightly greater than the thickness of the piston at the points ofcontact therewith, the

arrangement being such that when the piston rod is advanced toward theclosed end of the cylinder, valve 87 will cover and close ports 35, toprevent the escape of the liquid therethrough and compel it to passthrough discharge orifice 30 against the resistance of valve 31; butwhen the motion of the piston rod is reversed, valve 37 will bewithdrawn from the piston, permitting a free entrance of liquid into thecylinder. The hydraulic check as thus constituted is coupled with lever25 through a link 40, and a spring e1, acting through a rod 12 pivotallyconnected to lever 25, serves to retract the piston, the cylinder, whichis submerged in the liquid contained within the casing, filling throughports 35.

The oflice of the hydraulic check as here applied is to absorb themomentum of the driven mechanism immediately the clutch is released oropened, and, incidentally, to cushion the blow of the clutch operatingarm 6, to which end the parts are so arranged and adjusted that stop 12will engage said arm and open the clutch immediately before latch 18engages its arm 17 so that the driven member will be brought to restimmediately the unclutching is accomplished. This result is secured bymounting the stop and latch on links 13 coupled with lever let throughwhich their motion is transmitted to piston 34;. As is obvious, otherforms of cushioning or braking devices might be employed for thepurpose, those described being specially adapted for use in connectionwith the particular form of machine illustrated.

The connection between the driving and driven members having beeninterrupted in the manner described it can be instantly reestablished bythe withdrawal of stop 12 from in front of arm 6, whereupon spring 11will advance sleeve 5 to press the rollers into contact with annularbearing surface Having now explained a competent means for efiecting theengagement and disengagement of the driving and driven members it isnext in order to describe the means for automatically effecting theengagement of the driving and driven members and controlling theduration of the dwell or interval of rest of the driven member, thedriving member continuing in motion.

In the preferred form of embodiment illustrated it will be seen thatstop 12 is connected by link 13 to a lever e4, the latter carrying aroller engaging a cam 15 loose on a shaft 46. This shaft is coupled,through gearing 47, with the driving member, i. 6.,

pulley 1, and rotates in unison with the latter at a speed determined bythe relative size of the transmission wheels, in the present instancesomewhat in excess of the speed of the driving member. Cam 4:5 is soshaped that during each revolution and at a predetermined point thereinit will operate to withdraw stop 12 and latch 18 and retain them inretracted position during the passage of arms 6 and 17, and subsequentlythereto will advance said stop and latch into operating position toagain engage arms 6 and 17 provided the latter intersect the paths ofsaid catch and latch before the latter are again withdrawn by cam d5.This is a tea ture of collateral importance, will presently appear.

Between the clutch operating cam e5 and its driving shaft 16 isinterposed a clutch similar, in this example, to the primary clutchconnecting the main driving and driven members and which may bedesignated as the secondary clutch. The details of this clutch areillustrated in Figs. 12 to 15, inclusive. Cam constituting the drivenmember of this device recessed for the reception of a spring as one endwhereof engages a sleeve d9 turning on the hub 50, the latter providedwith cam seats 51 for the clutch rollers These rollers lie in recesses53 in sleeve e9 between hub and an annular bearing surface 5% fast onshaft s6 and constituting the driving member of this clutch. The clutchoperating sleeve 19 is provided with two arms or off-sets 56, indifferent planes, either of which when engaged by a suitable stop w'llserve to arrest the sleeve 49 and shift the clutching rollers, torelease the cam from its driving shaft, a pin 57 on cam 45 operating inconnection with one of said arms (56) serving to limit the throw of thesleeve in unclutching. As the principal object in introducing thissecondary clutch and connecting the timing mechanism therewith, ratherthan to the primary clutch (as indicated by the dotted lines in Fig. isto enable the driven mechanism to be turned by hand in either directionwhen the stopping lever or handle of the machine is manipulated todisconnectthe driving member, it is convenient at this point to explainthis collateral feature. of the invention.

Surrounding head 4 of the primary clutch and guided upon a rod 57 is acollar 58 pro vided with an arm 59 carrying a spring projected pin 60 inposition to engage the side of lever 14- when the latter is in its lowerposition, and to enter beneath a bearing (51 and thus sustain said leverwhen the latter is elevated to withdraw stop 12 from the path of arm 6.Arm 59 is also provided with a bearing 62 lying normally to one side ofthe plane of movement of the disengaging arm 55 of the secondary clutch,but adapted to be held in said path when the advance of collar 58 isarrested at an intermediate station as will presently appear. The drivenmember or head 4 of the primary clutch is furnished with a longitudinalguide for a bolt 63, the latter provided with an offset 64 riding in agroove 65 in collar 58 so that said bolt will partake of the movement ofthe collar in a direction longitudinally of shaft 370. Bolt 63 is solocated with relation to a shoulder 66 on arm 6 that when the latter isarrested or retracted, to unclutch the driven from the driving member,it can pass said shoulder and thus lock arm 6 in retracted position; butwhen said arm 6 is forward in running position the advance of bolt 63will be prevented until said arm is again thrown back to unclutchedposition. It is when collar 58 is thus arrested by the engagement ofbolt 63 with arm 6 that bear ing 62 stands in the path of arm 55.

Coupled with collar 58 is the unclutching shaft or rod 67 of the drivenmachine, provided with a spring 68 for moving it to unclutching positionand restrained and returned by a lever 69 coupled with what waspreviously known as the belt shifting lever of the type machine. Therelease of said belt shifting lever permits collar 58 to advance underpressure of spring 68. If at the time lever 44 is down and stop 12 isengaging arm 6, to open the primary clutch, as represented in Figs. 5and 6, bolt 63 will pass in front of shoulder 66, to lock the clutchopen, bearing 62 will cross the path of disengaging arm 55 of thesecondary clutch, and pin 60 will be retracted by contact with lever 44.Cam 45 continuing in motion raises lever 44 and with it stop 12 andcatch 18 until pin 60 is released when it engages bearing 61 to sustainlever 44. Should the advance of collar 58 take place when the primaryclutch was closed, that is to say, with sleeve 5 in its advanced orclutching position and lever 44 either elevated or depressed, bolt 63will be prevented from passing arm 6, and by its engagement with theside thereof will arrest collar 58 until after the primary clutch isagain opened, when the action first described will be repeated. By thesemeans not only is the primary clutch opened and locked in that position,but the stop 12 and latch 18 which would prevent free rotation of thedriven mechanism are withdrawn leaving said mechanism entirely free ofthe driving member or mechanism.

To start up again it is only necessary to retract collar 58 to initialposition, thereby withdrawing locking bolt 63 and pin 60 to release theprimary clutch and its actuating lever 44. For certain reasonspertaining to the structure of the type machine of the patent referredto it is desirable that the starting of the mechanism should take placeonly within a certain limited ortion of the revolution of the cam shaft3 0. To secure this result, head 4 is provided at one end with acircumferential flange or shoulder 7O coextensive with the inhibitedsection and the collar 58 carries a spring actuated interlocking pawl71, adapted to engage said flange and prevent the clutch closingmovement of collar 58 becoming effective until the flange has passedbeyond said pawl 71. If, in turning over the mechanism, the drivenmember is left with pawl 71 behind flange 70, collar 58 may not beshifted to couple up the driving member, until the driven member isreadjusted to bring the gap in said flange in register with the pawl,the latter constituting a lock out for the reengaging mechanism.

Returning now to the timing mechanism. Supported in bearings on theframe is a shaft 7 2 connected through gearing 73 to the driving member1 and through worm gearing 74 to a running shaft 7 5 so that the latterwill rotate in unison with the driving member but at a lower rate ofspeed. The lower end of shaft 75 is journaled in the frame and its upperor reduced portion extends through a sleeve or hollow shaft 76 journaledin a bearing 77. This bearing 77 is adjustable on the frame and is heldin position by a suitable detachable clamping device such as aneccentric or cam shaped lever 78 mounted upon the frame and engaging theperiphery of the bearing. Connected at opposite ends to sleeve 76 andbearing 77, respectively, is a spring 79 the latter tending to turnsleeve 76 in a direction to advance an arm 80 on said sleeve intocontact with a stop 81 on bearing 77.

Motion is transmitted from shaft 75 to sleeve 76 through a clutch,preferably similar to the described primary and secondary clutches, thatis to say, the shaft is equipped with a head 82, fast thereon, thesleeve is provided with an annular bearing 83 and in the annular spacebetween the hub of head 82 and said annular bearing is arranged anindependently movable sleeve 84 with clutching rollers 85. A spring 86interposed between an arm 87 on sleeve 82 and an arm 88 on sleeve 84serves to advance the latter, to close the clutch, while an arm orprojection 89 on sleeve 84 engaging the walls of a diagonal slot 90 in acasing 91 serves to throw the sleeve 84 to unclutching position. Casing91 is supported to move longitudinally upon shaft 7 5 and is held fromrotation thereon by suitable means such as the arm 87 extending througha longitudinal slot in said casing.

The elevation of casing 91 permits the clutch to close thus transmittingthe motion of shaft 75 to sleeve 76 in opposition to spring 79, and whensaid casing is retracted, 2'. 6., lowered, it opens the clutch, torelease sleeve 70, and the latter is returned to initial position by itsspring 79, said initial position being determined and adjusted by thesetting of the stop 81 against which arm 80 contacts. Means are thusprovided for varying the starting point of the sleeve 76 when coupledwith its driving shaft 75.

The upper end of sleeve 76 is formed or provided with gear teeth 92 andon the end of shaft 75, beyond said sleeve is mounted a second sleeve 93also provided with gear teeth 9% adjacent those on sleeve 7 6. Supported to turn about an axis concentric with sleeves 7 6 and 93, as byengaging cylindrical portions of said sleeves is a head or frame 95carrying one or more,preferably two, intermeshing planitary gears 96 and97 of which 96 gears with the teeth on sleeve 76 while 97 gears withthose on sleeve 93, the whole constituting an epicyclic train. Thearrangement is such that if head 95 is held stationary motion in theopposite direction will be transmitted from sleeve 7 6 to sleeve 93, andby shifting head 95 in either direct-ion the relative positions of saidsleeves can be varied.

The clutch operating casing 91 is provided with a groove 98 to receive ashifting lever 99, the latter faston ashaft 100 and provided on one sidewith a shoulder 101 adapted to be engaged by complement-a1 shoulder 102carried by a spring actuated lever 103, when the shifting lever 99 ismoved to close the clutch. A detent mechanism is thus provided forholding and maintaining the timing clutch closed when thrown to thatposition, and the release of lever 99, to open said clutch, is effectedby an admeasuring arm 10%; carried by sleeve 93 and contacting with theupper or free end of lever 103 to eflect the withdrawal of shoulder 102.The special function of this mechanism is to measure the intervalbetween successive releases of lever 99.

Assuming head 95 to be locked or held in any given position and lever 99lowered to open the timing clutch, sleeve 70 will be retracted by itsspring to the position indicated by stop 81 thereby locating admeasuringarm 10% in a predetermined relation to trip lever 103. If, now, shiftinglever 99 is elevated to engage tripping lever 103 and close the timingclutch, arm 10 1 will advance at a speed proportionate to that of themain driving member with which it is geared until it contacts with anddisplaces tripping lever 103 suficiently to release lever 99. permittingthe latter to fall, and, in so doing, to open the timing clutch andrestore arm 10ft to initial position.

In so far asthe initial timing effected by stop 81 is concerned the arm104; might be attached directly to sleeve 70 instead of sleeve 93, asindicated by dotted lines in Fig. 5; but by the addition of said sleeveand pimen-carrying head 95 another means for varying the timing isprovided, one which can be conveniently utilized for automaticallyvarying the timing to correspond with the adjustments of the moldcavity.

In order to transmit motion from sleeve 76 to sleeve 93 head 95 must beconfined; otherwise, when sleeve 93 is arrested by the contact of itsarm 10 1 with lever 103 the motion of sleeve 70 will be transmitted tosaid head, sleeve 93 remaining stationary and its arm exerting onlyenough pressure to overcome the friction of head 95. If, however, head95 is arrested at any point in its movement, the pressure upon arm 104will increase until either lever 103 or the means restraining head 95yields. So, too, by shifting head 95 upon its axis of rotation theposit-ion of arm 10% relative to lever 103 can be adjusted to vary theposition of said arm with relation to lever 103, and thus an additionalmeans is afforded for varying the initial timing, suitable retainingdevices being applied to lock head 95 in adjusted position.

In the preferred form of embodiment illustrated head 95 is equipped withteeth 105 meshing with a toothed segment 106 faston shaft 107. Coupledwith the mold adjusting devices, as by being secured to the moldadjusting rod 122, is an arm or abutment 108, and upon the frame ismounted a lever 109, one arm whereof lies in the path of said abutmentor gaging member 108, while the other is coupled by a link 110 with anarm 111 fast on shaft 107. Conveniently a spring 112 connects lever 109and arm 111, to retain said lever and head 95 in retracted position. Asthus arranged when sleeve 76 is rotated its motion is transmit-ted toarm 104. until the latter contacts with lever 103, head being retainedin position by the pressure of spring 112. The tension of the springoperating to retain lever 103 in locking position being superior tospring 112 acting upon head 95, arm 104 with its sleeve 93 is arrestedand the further motion of sleeve 70 is transmitted to lever 109 throughhead 95, causing said lever to approach and make contact with gagingmember 108. In the meantime this gaging member 108 has received itsadjustment and is firmly secured in position, consequently, when engagedby lever 109, further movement of head 95 is prevented, and thecontinued rotation of sleeve '76 will increase the pressure of arm 10-1until lever 103 is displaced, thereby terminating the excursion ofsleeve 7 6 by opening the clutch connecting it with its driving shaft75,

Obviously other and difierent means may be applied and will readily besuggested to the skilled mechanic both for adjusting or setting, and forgaging the excursions of, the movable member of the epicyclic gearing tovary the timing of the mechanism, the arrangement illustratedrepresenting a convenient form adapted to a particular type of machinefor effecting automatic control of the timing by the mold adjustingdevices.

t remains to be seen how timing the release of shifting lever 99 effectsthe driven in its relation to the driving member. Mounted upon shaft 100and adjustably connected with lever 99 is an arm 115 ro vided with aroller 116. This roller stands in the path traversed by the rear end oflocking bolt 63 carried by head 4 of the driven member, so that whencollar 58 is retracted to withdraw said bolt from in front of arm 6 andclose the primary clutch, bolt 63 will be in position to engage said arm115 and tilt lever 99 against the pressure of its retracting spring 117,thus closing the clutch of the timing devices and engaging locking lever103.

Loosely supported upon shaft 100 is a stop arm 118 adapted to beinterposed in the path of arm 56 of the clutch operating sleeve 41 toopen the secondary clutch for arresting the motion of cam 45. This stoparm 118 carries a pivoted latch 119 whose end is notched as at 120 toengage a pin 121 carried by lever 99. The latch 119 lies in the path ofcam 45 and it is recessed on one side for the passage of pin 121. Aspring 123 is connected to latch 119 to retain the latter in contactwith pin 121, said spring also oper ating to advance stop arm 118 intothe path of clutch arm 56. The opposite end of said spring 123 isattached to a lever 124 pivoted on the frame and engaging the hub of cam45 to restrain'back motion.

Assuming the timing mechanism to have been properly set or adjusted toproduce the desired period of dwell, and that the cycle of operationsbegins during said period when the parts occupy the relative positionsseen in Fig. 5. At this stage the timing clutch is closed; lever 99 issustained in closing position by latching lever 103; the secondaryclutch is held open by locking arm 118 whose latch 119 is engaged by pin121; and the primary clutch is held open by stop 12, the lattersuspended from the stationary cam 45 at a point immediately in advanceof the raising section of said cam. The driven member is at rest, thedriving member and timing mechanism are in motion and arm 104 isapproaching lever 103. The moment lever 103 is displaced lever 99 dropsunder the action of its spring, thereby opening the timing clutch andpermitting arm 104 to return to its initial position. At the same timestop arm 118 is withdrawn and the secondary clutch closes connecting cam45 with its continuously revolving driving shaft. Cam 45 now makes onecomplete revolution, first raising and then lowering stop 12 and latch17, then displacing latch 119 and allowing stop arm 118 to return intothe path of arm 56 of the secondary clutch which it engages at thecompletion of one revolution, thereby opening the secondary clutch andarresting cam 45.

While stop 12 and latch 17 were in retract.- ed position the primaryclutch closed and the driven member started in motion, carrying arm 6beyond stop 12 by the time the latter retuined to its tripping positionready to engage and open the primary clutch at the completion of onerevolution. During the revolution of the driven member and at apredetermined point therein bolt 63 engages lever 115 to raise lever 99,whereupon pin 121 is rengaged with latch 119, the timing clutch isclosed, and latching lever 103 reengaged, thus completing the cycle. Thedwell which takes place between successive revolutions of the drivenmember (370) corresponds with the interval between the closing of thetiming and primary clutches measured in terms of the speed of thedriving member, and by varying, in the manner explained, the excursionof arm 104, the duration of the dwell can be varied to suit thenecessities of the case. As applied to the type machine the timingmechanism operates immediately the cast is made to afford a longer orshorter interval for the setting of the metal before it is ejected fromthe mold.

The mechanism is readily adapted for continuous transmission, whennodwell is desired or required, either by uncoupling and removing orretaining stop 12 and latch 17 in elevated position, or by settingforward the timing devices so that the release of lever 99 will beeffected just before arm 6 of the primary clutch arrives opposite stop12, thereby causing the latter together with latch 17 to be withdrawnfrom in front of arm 6 and engaging shoulder 18 respectively during thepassage of the latter. It is to meet this last named condition thatcollar 58 is provided with lug 62 and sleeve 49 with complemental offsetor arm 55, in order that when the primary clutch is opened through themovement of collar 58 as hereinbefore explained stop 12 and latch 17will be withdrawn to free the driven mechanism and permit the latter tobe turned in either direction. It will be remembered that when theprimary clutch is closed in driving position, bolt 63 prevents theadvance of collar 58 until after sleeve 5 has been turned back to openthe clutch, and when the timing devices are set ahead, for continuousdriving, stop 12 is withdrawn from the path of arm 6 during its passage,to effect which stop arm 118 has been withdrawn from the path of the arm56 of the secondary clutch opening device and cam 45 is in motionupholding stop 12. If at this period collar 58 is advancing, under thepressure of its motor spring, lug 62 will be arrested in the path of armand will prevent the secondary clutch from closing until after theprimary clutch shall have been opened, it being borne in mind that thesecondary clutch has been opened by stop 118 after the passing of arm 6beyond stop 12, and that the latter is in position to open the primaryclutch. The obstruction to bolt 63 being thereby withdrawn the latter,together with collar 58, again advances thus locking the primary clutchin open position and withdrawing lug 62 from in front of arm 55 of thesecondary clutch opening device, whereupon said secondary clutch closesautomatically and cam 45 being thus set in motion elevates stop 12 untilits lever 1st passes above and is engaged by pin as before explained.

is hereinbefore stated the means described for actuating stop 12,including cam shaft 46, the secondary clutch, stop arm 11S, latch 119and pin 121 are auxiliary to the release of the driven member so that itcan be turned in either direction when the primary clutch is openedthrough the agency of the normal unclutching devices and are nototherwise essential to the action of the timing mechanism.

In so far as the action of the timing mech anism alone is concerned itwill sufiice if lever 99 is furnished with an arm 123 engaging stop 12as indicated by dotted lines in Fig. 5. so that when the timing clutchopens at the end of the traverse of arm 10%, the stop 12 will bewithdrawn, to close the primary clutch, and when, during the revolutionof the driven member, the timing clutch is closed and locked, stop 12will be again advanced and held in the path of arm (3 to open theprimary clutch in advance of the opening of the timing clutch.

The means herein disclosed for automatically eftecting the engagement ofthe driv ing and driven members and controlling the duration of thedwell or interval of rest of the driven member possess many featuresapplicable to other machines provided with means other than moldadjusting devices for varying the action of the admeasuring devices, andthe novel features of said mechanism as such are not claimed herein butare reserved in a divisional application, filed April 28, 1910. SerialNo. 5581M).

Having thus described the invention, what we claim as new and desire tosecure by Letters-Patent, is:

1. A driving or transmitting mechanism for type casting and likemachines including, in combination, driving, driven and coupling membersand a timing mechan sm controlled by the mold dimensioning devices andacting upon or through the coupling member to produce a dwell in themovement of the driven member.

2. A driving or transmission mechanism for type casting and likemachines including, in combination, driving and driven members,intermediate coupling means, an adjustable timing mechanism controllingsaid coupling means, and means coupled with the mold and acting uponsaid timing mechanism to adjust the dwell to accord with the capacity ofthe mold.

3. In a type casting and similar machines provided with adjustablemolds, the combination of the following elements, to wit; a drivingmember; a driven member, constituting the driver of the casting machine;a coupling means, such as a clutch, intermediate said driving and drivenmembers; a timing mechanism controlling the opening and closing of saidcoupling means; and adjusting means for said timing mechanism controlledby the mold adjusting devices.

4. In a driving or power transmitting mechanism for type castingmachines provided with an adjustable mold, and in combination therewith,the following elements, to wit; a driving member; a driven member; meansfor detachably coupling said driving and driven members; and a timingmechanism controlling the opening and closing of said coupling means,and provided with means for varying the interval between its opening andclosing action to vary the dwell.

5. In a driving or power transmitting mechanism for type casting andlike machines equipped with mold adjusting and metal injectingmechanisms and in combination therewith the following elements, to wit;a driving member; a driven member; means for detachably coupling saiddriving and driven members; a timing mechanism controlling the openingand closing of said coupling means and provided with variableadmeasuring means; and means coupled ith the mold adjusting devices andacting upon said variable admeasuring means to adjust the period ofdwell to correspond with the dimension of the mold cavity.

6. In a type casting machine the combination of the following elements,to wit; a driving member; a driven member; means for detachably couplingthe driving and driven members; a timing mechanism controlling saidcoupling means and provided with an admeasuring member for ClGt6l'111ll1ing the interval elapsing between the opening and closing of saidcoupling means; means for adjusting or varying the traverse of saidadmeasuring member; and controlling devices coupled with the adjustablemember of the mold and acting upon said admeasuring member adjustingmeans to set the latter to correspond With the dimensions of the mold.

7. In a driving mechanism for typecasting and like machines providedWith mold adjusting devices, driving and driven mem-,

bers, and a one revolution clutch intermediate said members, and incombination therewith, a timing mechanism including the followingelements, to Wit; a running shaft; a driven shaft; a clutch intermediatesaid shafts provided With actuating devices and a latch or detenttherefor, an epicyclic train whereof the axial gear is coupled With thedriven shaft and the planetary gear with an admeasuring arm opposed toand operating upon the detent or latch; and adjusting devices coupledwith the support for the planetary gear and controlled by the moldadjusting devices to automatically vary the throw of the admeasuringarm.

JOHN SELLERS BANCROFT. MAURITZ C. INDAHL.

Wit-nesses:

MORTIMER A. JONES, FRED WEINDEL, J r.

